<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<style>
   body{
       background: url("http://ku.90sjimg.com/back_pic/00/04/48/13562472778722d.jpg") no-repeat;
       width: 100%;
       height: 100%;
    }

</style>
<body>

</body>
</html>